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Finding the Fourth Proportional to 8,997.40, 13,496.10 and 8,939.80

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Solution

The fourth proportional to 8,997.40, 13,496.10 and 8,939.80 is: 13,409.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,997.40 : 13,496.10 = 8,939.80 : x
  2. Step 2: Convert to fraction form
    8,997.40/13,496.10 = 8,939.80/x
  3. Step 3: Cross multiply
    8,997.40x = 13,496.10 × 8,939.80
  4. Step 4: Simplify right side
    8,997.40x = 120,652,434.78
  5. Step 5: Solve for x
    x = 120,652,434.78/8,997.40
  6. Step 6: Final answer
    x = 13,409.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.